Extracting dark matter signatures from atomic clock stability measurements
Extracting dark matter signatures from atomic clock stability measurements
复制标题
从原子钟稳定性测量中提取暗物质特征
DOI：
10.1103/physrevd.96.075007
复制
发表时间：
2017
影响因子：
5
通讯作者：
N. Yu
中科院分区：
文献类型：
--
作者：
T. Kalaydzhyan;N. Yu
我们分析了暗物质环境对原子钟稳定性测量的可能影响。暗物质被假定以超轻标量场的波的形式或以拓扑缺陷（单极子和弦）的形式存在。我们确定暗物质的信号签名时钟艾伦偏差图，可用于约束暗物质耦合到标准模型字段。利用Al+/Hg+时钟比较的现有数据，对质量m > 10^{-15} eV的暗物质的质量提出了新的限制。我们还估计了未来空间原子钟实验的灵敏度，包括国际空间站上的铯微波和锶光学钟，以及潜在的核钟。这些实验有望将拓扑暗物质的质量限制在10^{-10} eV < m < 10^{-6} eV的范围内。
We analyze possible effects of the dark matter environment on the atomic clock stability measurements. The dark matter is assumed to exist in a form of waves of ultralight scalar fields or in a form of topological defects (monopoles and strings). We identify dark matter signal signatures in clock Allan deviation plots that can be used to constrain the dark matter coupling to the Standard Model fields. The existing data on the Al+/Hg+ clock comparison are used to put new limits on the dilaton dark matter in the region of masses m > 10^{-15} eV. We also estimate the sensitivities of future atomic clock experiments in space, including the cesium microwave and strontium optical clocks aboard the International Space Station, as well as a potential nuclear clock. These experiments are expected to put new limits on the topological dark matter in the range of masses 10^{-10} eV < m < 10^{-6} eV.